4D+ City Sidewalk: Integrating Pedestrian View into Sidewalk Spaces to Support User-Centric Urban Spatial Perception
Jinjing Zhao, Yunfan Chen, Yancheng Li, Haotian Xu, Jingjing Xu, Xuliang Li, Hong Zhang, Lei Jin, Shengyong Xu
TL;DR
This paper presents a system that combines user and CCTV views to create a 4D+ visualization of sidewalk environments for better urban spatial understanding.
Contribution
A scalable spatial visualization system integrating first-person and CCTV data for user-centric sidewalk monitoring.
Findings
Landmark-based localization achieves 0.468 m planar and 0.120 m height error on average.
CCTV-assisted target localization maintains an overall error of 0.24 m.
The system supports real-time spatiotemporal visualization of sidewalk environments.
Abstract
As urban environments become increasingly interconnected, the demand for precise and efficient pedestrian solutions in digitalized smart cities has grown significantly. This study introduces a scalable spatial visualization system designed to enhance interactions between individuals and the street in outdoor sidewalk environments. The system operates in two main phases: the spatial prior phase and the target localization phase. In the spatial prior phase, the system captures the user’s perspective using first-person visual data and leverages landmark elements within the sidewalk environment to localize the user’s camera. In the target localization phase, the system detects surrounding objects, such as pedestrians or cyclists, using high-angle closed-circuit television (CCTV) cameras. The system was deployed in a real-world sidewalk environment at an intersection on a university campus.…
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Taxonomy
TopicsVideo Surveillance and Tracking Methods · Smart Parking Systems Research · Remote Sensing and LiDAR Applications